Messages in this thread | | | Date | Sun, 2 Aug 2015 09:42:20 +0200 | From | Pavel Machek <> | Subject | Re: May close() return any error code? |
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On Wed 2015-07-29 12:46:59, Takashi Iwai wrote: > Hi, > > while debugging a problem of X and gdm with the old systemd-210, we > encountered a sudden death of systemd-logind, and this turned out to > be an unexpected errno from close(). The close() call for input > devices returns ENODEV error. The logind in systemd-210 treats this > error code as fatal, triggers assert() and eventually kills itself. > The details are found in an openSUSE bugzilla thread: > https://bugzilla.opensuse.org/show_bug.cgi?id=939571 > > This seems coming from evdev_flush(). As there is no fd leak, it's no > big problem per se. But, now the question is whether returning such > an error code is correct behavior at all. At least, it doesn't seem > defined in POSIX: > http://pubs.opengroup.org/onlinepubs/009695399/functions/close.html
Returning an error from close() would imply that file descriptor is not closed.... seems like bad idea. Just fix the kernel not to do it.
-- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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